Class 11 NEET Biology Cell Cycle and Cell Division

During S phase of cell cycle replication of DNA takes place. In animal cells during S phase, centriole duplicates in the cytoplasm.
In G2 phase there is duplication of mitochondria, chloroplast and Golgi bodies. Tubulin portein is also synthesized during this phase.
During prophase, condensation of chromatin starts.
During metaphase, chromosomes get aligned at equator to form metaphasic plate.